Needle hub



FIG. 1 is a side elevational view of a needle hub, showing my new design. The broken line showing of the syringe and needle are for illustrative purposes only and forms no part of the claimed design;

FIG. 2 is a perspective view of the needle hub;

FIG. 3 is a front end view thereof;

FIG. 4 is a cross-sectional view thereof, taken along the line 4—4 of FIG.;

FIG. 5 is a rear end view thereof; and,

FIG. 6 is side elevational view thereof. 

The ornamental design for a needle hub, as shown and described. 